64238192468 has 24 divisors (see below), whose sum is σ = 122246612712. Its totient is φ = 29412716544.

The previous prime is 64238192461. The next prime is 64238192471. The reversal of 64238192468 is 86429183246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20674988944 + 43563203524 = 143788^2 + 208718^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64238192461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12763421 + ... + 12768452.

It is an arithmetic number, because the mean of its divisors is an integer number (5093608863).

Almost surely, 2^64238192468 is an apocalyptic number.

64238192468 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64238192468 is a deficient number, since it is larger than the sum of its proper divisors (58008420244).

64238192468 is a wasteful number, since it uses less digits than its factorization.

64238192468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25531931 (or 25531929 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 53.

The spelling of 64238192468 in words is "sixty-four billion, two hundred thirty-eight million, one hundred ninety-two thousand, four hundred sixty-eight".